Protocol Tools
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Stackdar watches every launch we detect and sends you the ones that ship with anything in Protocol, your competitors' tools included, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workThe most-adopted protocol tool we track is HTTP/3 (1,025,229 sites). We've detected 15 protocol tools across 1,025,293 public sites.
Note (Jul 1, 2026): Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.
Protocol tools we've detected
| Tool | 90‑day | Sites |
|---|---|---|
|
HTTP/3
site ↗
HTTP/3 over QUIC support, advertised via the Alt-Svc response header. Common signal: large CDNs (Cloudflare, Fastly, Vercel, Akamai) all advertise h3 on every response. Surfaced as a top row on the /trends chart.
|
1025229 | |
|
Tor Onion Service
Site declares an .onion mirror reachable through the Tor network via the Onion-Location response header.
|
71 | |
|
United States Semantic Standard
site ↗
Markup standard for US local news sites that declares structured publisher, locality and licensing metadata.
|
38 | |
I2P
site ↗
Anonymous peer to peer overlay network whose sites are addressed under the .i2p pseudo top level domain.
|
7 | |
TDM Reservation Protocol
site ↗
W3C protocol letting a website declare whether its content may be used for text and data mining, including AI training.
|
6 | |
AT Protocol
site ↗
Open protocol for decentralised social publishing, using at:// URIs and DID identifiers to link a site to its author record.
|
3 | |
njump
site ↗
Web gateway that renders Nostr notes and profiles as ordinary web pages for readers without a Nostr client.
|
3 | |
WebTorrent Tracker
site ↗
Public WebRTC tracker endpoints used by browser based BitTorrent clients to find peers.
|
3 | |
Repr-Digest
site ↗
HTTP integrity header defined in RFC 9530 that carries a checksum of the representation a response returns.
|
2 | |
carbon.txt
site ↗
Open standard for publishing verifiable claims about the energy and carbon footprint of a website and its hosting.
|
1 |
Showing top 10 of 15 protocol tools by adoption. 5 more not shown.
The StackScope API serves every protocol tool and the launches using each, filterable and exportable, from £15 a month.
Launches using Protocol tools
| Launch | Launched | Score |
|---|---|---|
| Home Stories | Aug 29, 2026 | 7.1 |
| Moon Light Studio | Aug 29, 2026 | 5.0 |
| HeicTools | Aug 29, 2026 | 9.5 |
| Rubinyun | Aug 29, 2026 | 6.8 |
| Densar BK | Aug 29, 2026 | 6.8 |
| SyncLink | Aug 29, 2026 | 8.1 |
Often built with
Categories the protocol sites we track also commonly use: